我有一個PhaseListener監聽phaseId RENDER_RESPONSE。這個faceListener調用這個方法:IllegalStateException在重定向
public void doLogin(ServletRequest request) throws IOException {
FacesContext fc = FacesContext.getCurrentInstance();
HttpServletRequest req = (HttpServletRequest) request;
String code = req.getParameter("code");
if (StringUtil.isNotBlankString(code)) {
String authURL = Facebook.getAuthURL(code);
URL url = new URL(authURL);
try {
....
if (accessToken != null && expires != null) {
boolean isLoginOk = service.authFacebookLogin(accessToken);
if (isLoginOk) {
fc.getApplication().getNavigationHandler().handleNavigation(fc, "/welcome.xhtml", "logged-in");
}
} else {
throw new RuntimeException("Access token and expires not found");
}
} catch (IOException e) {
throw new RuntimeException(e);
} catch (FacebookException e) {
Logger.getLogger(FBOauth.class.getName()).log(Level.SEVERE, "Facebook error", e);
}
}
}
private String readURL(URL url) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = url.openStream();
int r;
while ((r = is.read()) != -1) {
baos.write(r);
}
return new String(baos.toByteArray());
}
當它重定向,我得到以下異常,我真的找不到任何解決方案。從我所瞭解的情況來看,這是因爲響應已經被解決了,但爲什麼它已經被解決了?
java.lang.IllegalStateException at
org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:522)
at com.sun.faces.context.ExternalContextImpl.redirect(ExternalContextImpl.java:572)
at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:182)
at wmc.web.facebook.FBOauth.doLogin(FBOauth.java:57)
at wmc.web.listeners.FacebookSignInListener.afterPhase(FacebookSignInListener.java:56)
at com.sun.faces.lifecycle.Phase.handleAfterPhase(Phase.java:189)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:107)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
通過我真的很感激所有幫助我在這裏:)獲得方式
我已經做到了,但現在我回到昨天的問題:http://stackoverflow.com/questions/4225014/managed-bean-is-sometimes-null-and-sometimes-not這是更新爲當前版本 – AnAmuser 2010-11-20 11:54:36